AMD Radeon Pro 575 vs AMD Radeon RX 6800 XT Comparison

Architecture Differences

The AMD Radeon RX 6800 XT and the AMD Radeon Pro 575 represent two completely different generations of GPU design, and the architectural gap shows in nearly every measurement. The RX 6800 XT is built on the RDNA 2.0 architecture using the Navi 21 chip, manufactured on TSMC's 7 nm process. The Radeon Pro 575 uses the older GCN 4.0 architecture with the Ellesmere chip, built on GlobalFoundries' 14 nm process. That process difference alone explains much of the efficiency and performance gap: the RX 6800 XT packs 26,800 million transistors into a 520 mm² die, while the Pro 575 manages 5,700 million transistors on a 232 mm² die. Transistor density tells the story: 51.5M per mm² for the RX 6800 XT versus 24.6M per mm² for the Pro 575.

The compute resources are drastically different. The RX 6800 XT has 4,608 shading units, 288 texture mapping units, and 128 render output units. The Pro 575 has 2,048 shading units, 128 TMUs, and only 32 ROPs. The RX 6800 XT also includes 72 ray tracing cores, a feature the Pro 575 lacks entirely. The memory subsystem follows the same pattern. The RX 6800 XT uses 16 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s of bandwidth. The Pro 575 uses 4 GB of GDDR5 on a 256-bit bus with 217.0 GB/s. Both have the same bus width, but the newer memory type and higher effective speed (16 Gbps versus 6.8 Gbps) give the RX 6800 XT more than double the bandwidth.

The interface and power delivery also differ. The RX 6800 XT uses PCIe 4.0 x16, while the Pro 575 uses PCIe 3.0 x16. The RX 6800 XT has a 300 W TDP with dual 8-pin power connectors and a suggested 700 W PSU. The Pro 575 is a 150 W MXM module with no external power connectors, designed for portable or all-in-one systems. API support is also newer on the RX 6800 XT: DirectX 12 Ultimate (12_2) versus DirectX 12 (12_0), and Vulkan 1.4 versus 1.3. Both support OpenGL 4.6.

Release timing confirms the generation gap: the RX 6800 XT launched in October 2020, while the Pro 575 launched in June 2017. Both are end-of-life products now, but the architecture difference is not a small refinement; it is a complete redesign with different process nodes, memory types, and feature sets.

Head-to-Head Benchmarks

The recorded data includes three head-to-head benchmark comparisons, and the RX 6800 XT wins all three. The largest margin is in Geekbench OpenCL, where the RX 6800 XT scores 171,304 against the Pro 575's 34,596. That is a delta of 395.2%, meaning the RX 6800 XT delivers nearly four times the OpenCL compute performance. This is the kind of gap you expect from a card with more than double the shading units, higher clocks, and a newer architecture.

In Geekbench Metal, the RX 6800 XT scores 181,337 versus 46,192 for the Pro 575, a delta of 292.6%. Metal performance on the RX 6800 XT is about three times higher. The Geekbench Vulkan test shows a similar story: 136,875 for the RX 6800 XT versus 37,878 for the Pro 575, a delta of 261.4%. Vulkan performance is roughly 2.6 times higher on the newer card.

The RX 6800 XT also has a much broader benchmark footprint in the database. It has recorded scores for 3DMark Steel Nomad DX12 (3,689), PassMark DirectX 10 (155), DirectX 11 (264), DirectX 12 (100), DirectX 9 (265), G2D (1,030), G3D (24,980), and GPU compute (13,245). The Pro 575 only has Geekbench Metal, OpenCL, and Vulkan scores recorded. No DirectX or PassMark results exist for the Pro 575 in the database, so those comparisons cannot be made directly.

The average benchmark score also favors the RX 6800 XT: 48,477 versus 39,555 for the Pro 575. That is a meaningful gap, but the percentile rankings are closer than you might expect. The RX 6800 XT sits at the 85th percentile of all GPUs, while the Pro 575 sits at the 82nd. The Pro 575's percentile is helped by its narrow benchmark set; it only has three recorded tests, all of which are compute-oriented.

Where Each One Wins

The RX 6800 XT wins in every recorded benchmark category. The data shows no benchmark result where the Pro 575 comes out ahead. In raw compute throughput, the RX 6800 XT is far ahead: FP32 performance is 20.74 TFLOPS versus 4.489 TFLOPS for the Pro 575. That is roughly 4.6 times the FP32 compute. FP16 performance is 41.47 TFLOPS (2:1 ratio) on the RX 6800 XT versus 4.489 TFLOPS (1:1 ratio) on the Pro 575. The Pro 575 does not get a throughput boost for FP16, while the RX 6800 XT doubles its rate.

Pixel and texture rates follow the same pattern. The RX 6800 XT has a pixel rate of 288.0 GPixel/s and a texture rate of 648.0 GTexel/s. The Pro 575 has 35.07 GPixel/s and 140.3 GTexel/s. The RX 6800 XT is roughly 8 times faster at pixel fill and about 4.6 times faster at texture fill. These numbers directly translate to higher resolution rendering and more complex scenes.

The Pro 575 has one practical advantage: its form factor. It is an MXM module with a 150 W TDP and no power connectors, making it suitable for systems where a full-size dual-slot card with 2x 8-pin connectors cannot physically fit. The RX 6800 XT is a dual-slot card measuring 267 mm in length, 120 mm in height, and 50 mm in width. The Pro 575 has no recorded dimensions, but its MXM form factor implies a much smaller footprint. For a mobile workstation or a compact all-in-one chassis, the Pro 575 is the only option of the two.

FAQ

Q: Which GPU has higher raw compute performance?

A: The RX 6800 XT has 20.74 TFLOPS FP32 performance, while the Pro 575 has 4.489 TFLOPS. The RX 6800 XT also has 41.47 TFLOPS FP16 (2:1) versus 4.489 TFLOPS (1:1) for the Pro 575.

Q: How much faster is the RX 6800 XT in Geekbench Metal?

A: The RX 6800 XT scores 181,337 in Geekbench Metal, which is 292.6% higher than the Pro 575's 46,192.

Q: Does the Pro 575 support ray tracing?

A: No. The Pro 575 has no ray tracing cores listed in the database, while the RX 6800 XT has 72 RT cores.

Q: What is the memory configuration difference?

A: The RX 6800 XT has 16 GB of GDDR6 with 512.0 GB/s bandwidth. The Pro 575 has 4 GB of GDDR5 with 217.0 GB/s bandwidth. Both use a 256-bit bus.

Q: Which GPU has a higher percentile ranking among all GPUs?

A: The RX 6800 XT is at the 85th percentile, and the Pro 575 is at the 82nd percentile. Despite the large performance gap, the Pro 575's percentile is close because it has only three recorded benchmark scores.

Q: What is the power consumption difference?

A: The RX 6800 XT has a 300 W TDP with dual 8-pin power connectors and a suggested 700 W PSU. The Pro 575 has a 150 W TDP, uses an MXM module form factor, and requires no external power connectors.

Specification Differences

| Field | AMD Radeon RX 6800 XT | AMD Radeon Pro 575 |

|---|---|---|

| Architecture | RDNA 2.0 | GCN 4.0 |

| Process Node | 7 nm (TSMC) | 14 nm (GlobalFoundries) |

| Transistors | 26,800 million | 5,700 million |

| Die Size | 520 mm² | 232 mm² |

| Shading Units | 4,608 | 2,048 |

| TMUs | 288 | 128 |

| ROPs | 128 | 32 |

| RT Cores | 72 | None |

| Memory Size | 16 GB GDDR6 | 4 GB GDDR5 |

| Memory Clock | 2000 MHz (16 Gbps effective) | 1695 MHz (6.8 Gbps effective) |

| Memory Bandwidth | 512.0 GB/s | 217.0 GB/s |

| FP32 Performance | 20.74 TFLOPS | 4.489 TFLOPS |

| FP16 Performance | 41.47 TFLOPS (2:1) | 4.489 TFLOPS (1:1) |

| Pixel Rate | 288.0 GPixel/s | 35.07 GPixel/s |

| Texture Rate | 648.0 GTexel/s | 140.3 GTexel/s |

| TDP | 300 W | 150 W |

| Slot Width | Dual-slot | MXM Module |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 700 W | Not specified |

| Bus Interface | PCIe 4.0 x16 | PCIe 3.0 x16 |

| DirectX Support | 12 Ultimate (12_2) | 12 (12_0) |

| Vulkan Support | 1.4 | 1.3 |

| Launch Date | 2020-10-27 | 2017-06-04 |

| Launch MSRP | 649 USD | Not specified |

The Verdict

The benchmark data is unambiguous: the RX 6800 XT outperforms the Pro 575 in every recorded test, with deltas ranging from 261.4% to 395.2%. If your priority is compute performance, rendering speed, or gaming capability, the RX 6800 XT is the clear choice. Its 16 GB of GDDR6 memory, 512.0 GB/s bandwidth, and 72 RT cores make it suitable for modern workloads that the Pro 575 cannot handle at the same level. The RX 6800 XT also has a higher average benchmark score (48,477 versus 39,555) and a higher percentile ranking (85th versus 82nd).

The Pro 575 is not without a use case, but it is a narrow one. As an MXM module with a 150 W TDP and no power connectors, it fits into portable or compact systems where the RX 6800 XT physically cannot go. The RX 6800 XT requires a dual-slot PCIe slot, dual 8-pin power connectors, a 700 W PSU, and 267 mm of clearance. If those constraints are deal-breakers, the Pro 575 is the only one of the two that will work. It also has a lower power draw, which matters in thermally constrained chassis.

For anyone building a desktop workstation or gaming PC, the data points strictly to the RX 6800 XT. The performance gap is too large to justify the Pro 575 outside of a form-factor requirement. The Pro 575's only recorded wins are practical, not performance-based: it supports OpenGL 4.6 (same as the RX 6800 XT), has a lower TDP, and fits in MXM slots. In every measurable benchmark category, the RX 6800 XT is faster by a factor of at least 2.6 and up to nearly 4. The verdict is simple: pick the RX 6800 XT unless your chassis forces you into the Pro 575.